Woodworking-machine.



K. F. G. MAIER.

WOODWORKING MACHINE.

APPLlCATlON FILED 001.10. 1916. RENEWED SEPT-29.1957- Patented Aug. 20,1918.

2 SHEETS-SHEET 1.

fnvenibz K. F. MAIER.

WOODWORKING MACHINE,

APPLICATION man 001.10. 1916. RENEWED sEPL29. 1911.

Patented Aug. 20, 1918.

2 SHEETS-SHEET Z- mi M 1m: :0 mmm umwwam man/N n r KARL FREDBIGK GUSTAVMAIER, OF SOUTH ASHBUBNHAM, MASSACHUSETTS.

WOODWOBKING-MACHINE.

Specification of Letters Patent.

Patented Aug. 20, 1918.

Application filed October 10, 1916, Serial No. 124,765. RenewedSeptember 29, 1917. Serial No. 194,082.

To all whom it may concern:

Be it known that I, KARL FREDRIOK Gos- TAV Manna, citizen of the UnitedStates, and resident of South Ashburnham, in the county of Worcester andState of Massachusetts, have invented certain new and usefulImprovements in lvoodworking Machines, of which the following is aspecification.

This invention relates to wood working machines and in regard to certainmore specific features thereof to pattern feed mechanism therefor.

The invention has for one of its objects to provide a device of thecharacter above referred to which will be simple in construction,inexpensive and durable.

Another object lies in a provision of a reli ably efiicient pattern andpattern feed which is adapted to be operated by relatively unskilledworkmen and upon machines em ploying high speed tools.

()ther objects will be in part obvious and in part pointed outhereinafter.

The invention accordingly consists in the various features ofconstruction, combinations of elements and arrangements of parts whichwill be exemplified by the construction hereinafter set forth and thescope of the application of which will be indicated in the followingclaims.

Referring to the drawings wherein 1s illustrated one of various possibleembodiments of the invention:

Figure 1 is a top plan view of a chairseat shaping machine embodying theinventlon.

Fig. 2 is a side elevational view, partly in section, of the machineshown in Fig. 1.

In the drawings similar reference characters refer to similar partsthroughout the different views and there is indicated at 1 a basebearing the body or upright 2 which flares as indicated at 3 into atable or support for the work to be operated upon. Upon opposite sidesof the body 2 there are provided bearing brackets 1 which serve tosupport vertical cutter shafts 5, one on either side of the body. Eachcutter shaft is provided with a pulley 6 driven by belting from the maindrive shaft (not shown in the drawings). Attention is called to the factthat one of the pulleys 6 is driven through a straight belt and theother through a cross belt to cause opposite rotation of the cuttersrespectively. Secured to the top of the table 3 are brackets 7, one foreach cutter shaft,

and the upper portion of the cutter shafts project loosely through thebrackets respectively. A cutting tool 8 is fixed on each cutter shaftabove the plane of the bracket 7. Below the plane of each bracket 7 areidlers 8 each journaled in the table 3. It will be obvious, however,that these last said parts may be fixed to the table or integral withthe brackets without departing from the scope of the invention. Theidlers are for a purpose which will hereinafter appear.

In line with each of the brackets 7 there are arranged, respectively,adjustable brackets 9. These brackets carry the journals 10 for ahorizontal countershaft 11 having provided thereon a step pulley 12driven through a belt 13 from the main driving shaft of the machine.Shaft 11 is formed with worms l4 and 15 having their driving tendenciesin opposite directions. These worms cooperate with worm wheels 16 and 17to drive the stub shafts 18 and 19 in respectively opposite directions.Brackets 9 serve to provide bearings for these stub shafts. Below thebrackets 9 and secured to the stub shafts 18 and 19 are sprockets 20 and21 respectively. The sprocket 2O drives an endless chain 22 the freeloop of which is carried around one of the idlers S and the sprocket 21drives an endless chain 23 the free loop of which is carried around theother idler. It will be seen that the chains 22 and 23 are moved inreverse directions and at a relatively low speed due to the worm and theworm wheel construction just described.

In practice it is desirable to employ cutting tools of high speed forshaping chair seats and similar articles. It is also found desirable tokeep the direction of cutting with the grain of the work. Formerly ifthe high speed cutter should catch in the work the liability of injuryto the operator has been great. By the present invention this liabilityis reduced to a minimum without in any way restricting the freemanipulation of the work toward and from the out ting tool. To this enda pattern 24 is provided having engaging members 25 projecting laterallyfrom the periphery of the pattern preferably in the form of teeth, asshown, which engage with successive links of the chains 22 and 23. Whenthe pattern is cooperating with the chain 23 the feed is in onedirection and against the cutting direction of the cooperating tool.When the 'r mesa-55o the chain c1- and also a cooperating tool. 1 to thepattern here the chair clamps may Zt'will be proviced with a smooth 1 isadapted to be com. a clamps upon rad moves the same to to engage tentwith tie The chain will serve to and work slowly in a di 1 the cuttingmove the pa rection oppo the tool 8 a 1' continue chain reed m) met-lraisin serves lock the 'lla 'is against movem t in f rs '7'- t i it thcutting tool ca es r t literal projections or teeth attern preventlatter "from he r" projected in the direction of cat As many cln ge ildbe made in the above construction many apparently widely di 'erentLi'lllJOCllllJElltb of tee invention might be made without depz rtingiroin the scope the not it is intended that al con the toreaoing d orshown shall be inter described, in ccintnnatioin a pattern, a pattern 1.in an apparatus of the character feed, a cutter for worl: in unted onsaid pattern, the pattern and teed having interengaging el ments wherebythe former is ted 13:. he latter oppo l to tile direction of or ttingwhile permi ting movement of the i the proximate said table a teeddevice associated with each cutter for moving work lowl: the directionof cutting and :n and worl: holding de -ice adapted loosely said table,so it may he om one to the other or" said comprising means fortemporarily the said teed device opposite cutter? enaag n cutter,

an apparatus or d *ice ada J. .L 1 I! anation, a mole, a pair or spaapart and lying in a e above said table, means pt d to rota aid cuttersin respectivel y directions, a feed device associated cut movi workslowly outlin a pair 0t in and worlr holding be moved freely a out onsair ittern comprising a pattern gt d a patt rn teed 0 lg the L V formerbeing at apted to cooperate with the said ahutuicuts and the latter withthe said teed device during the cutting operation.

" an .pparatus ie charccter dein combination, a table, pair of Hid S atleht angles thereto a cutter r of ale bi its, means for rotating saidcutters in respectively opposite direcions a pt t ed cooperatively assocsaid cutters, means adapte c t A n teed of each cutte" in z direction tomove the work against 1 cutting, and a pattin and work holding devicemovable at will on said table and comprising L pattern teed edge whichthe operate may cause to engage pattern teed of either temporarily withthe cutter as desired.

In an apparatus of the character described in combination, a pattern, apattern eed, a cutter for work mounted on said patern, the pattern andteed having interenelements whereby the former is positively ted by thelatter oppositely to the direction of cutting and throw-hack by thecutter is prevented while permitting free movement of the pattern towardand away from the pattern feed.

'7. A machine of the character described comprising, in combination, apattern adapted to be conn cted to the work to he treated, a rotary toolfor operating on the worl:

guide member for the pattern, a feed element movable in an endless path,said pattern and feed element having interengaging portions forpositively feeding the pattern and article relatively to the tool, andmeans to rotate the latter, said tool, guide member and feed elementbeing at the same side of the work and pattern to enable presentation ofthe pattern and work thereto when moved in one direction and theirremoval from said parts when moved in an opposite direction.

8. A machine of the character described comprising, in combination, apattern adapted for connection with an article, a rotary tool foroperating on the article, a guide member for the pattern, and a feedelement movable in an endless path, said pattern and feed element havinginterengaging parts for postively feeding the article relatively to thetool, and said guide member and feed element being in superposedrelation for enabling lateral presentation of a side of said patternconcurrently to said guiding means and feed element.

9. A machine of the character described, comprising in combination, apattern for an article, a rotary tool for operating upon the article, afeed element movable in an endless path, interengaging parts for saidpattern and feed element to feed the article positively relatively tothe tool, a guide for the pattern and means to rotate the tool, saidfeed element, guide and tool being disposed in axial alinementpermitting lateral presentation of a side of the pattern and articleconcurrently thereto.

10. A machine of the character described, in combination, a movablepattern for an article, means adapted to secure the article to thepattern for movement therewith, a rotary tool mounted to operate on aperipheral edge of the article, said pattern being laterally movable atthe will of the operator to bring an edge of the work into and out ofengagement with said tool, and means to feed the article relatively tothe tool including a rotor, a shaft, a worm gear thereon, and a worm torotate said gear and prevent slip or reverse rotation of said rotor.

11. A machine of the character described comprising, in combination, apair of rotary tools, means to rotate the same in opposite directions,pattern means for an article movable to present the articlealternatively to said tools at will, and separate feeding devicesassociated with said cutters and cooperating with said pat-tern means tofeed the article relatively to said cutters.

12. In a machine of the character described, in combination, a table, anupright shaft rotatable at high speed and carrying a tool, a low speedfeeding element movable about said shaft, a pattern adapted to be movedon said table, and means whereby work may be secured to said pattern inposition to be operated upon by said tool, said pattern and feedingelement having interengaging portions providing for the positivetransmission of movement to the pattern without clamping the pattern tothe feed element.

13. In a machine of the character described, in combination, a table, anoperating device above the table, comprising a slow feed element, aguide member and ,a high speed rotary tool positioned in differenthorizontal planes, a pattern and work holding device having means forinterengaging said feed element, said pattern device being movablelaterally against said operating device to cause feeding engagement andsimultaneous engagement of the work with said tool.

14:. In a machine of the character described, in combination, a table,an operating device above the table comprising a slow feed element, aguide member and a high speed rotary tool positioned in difierenthorizontal planes, a pattern and work holding device having means forinterengaging said feed element, said pattern device being movablelaterally against said operating device to cause feeding engagement andsimultaneous engagement of the work with said tool, and laterally awayfrom said operating device to interrupt the feed.

Signed at South Ashburnham in the county of Worcester and State ofMassachusetts this 13th day of September, A. D., 1916.

KARL FREDRICK GUSTAV IlIAlER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. G.

